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The spectroscopic analysis, TGA and X-ray diffraction showed that the organic reagent had intercalated into the layers of MMT, and the interlayer space of the organophilic montmorillonite modified by compound surfactants was larger than that of the CTAB modified organophilic montmorillonite.

红外光谱分析、热重分析和X-射线衍射分析表明，有机插层剂已进入蒙脱土的层间，CTAB/己内酰胺复合插层有机蒙脱土的层间距大于单阳离子CTAB插层有机蒙脱土的层间距。

A modified γ-Al〓O〓 was prepared by a special precipitation method with aluminum nitrate solution containing a certain amounts of orthosilicic acid and ammonia aqueous solution. Compared with commercial γ-Al〓O〓, the modified γ-Al〓O〓 was an effecient catalyst for dehydration of tetrahydrofurfuryl alcohol to dihydropyran. The results revealed that the strong acid sites on the surface of the catalyst may play a crucial role in this reaction.

并以硝酸铝和氨水为原料，用沉淀法制备出一种高比表面和拥有较多强酸中心的γ-Al〓O〓，它在四氢糠醇开环脱水制备二氢吡喃的反应中有优良的催化活性，通过比较此γ-Al〓O〓和普通商业γ-Al〓O〓的Py-TPD图，发现强酸中心在制备二氢吡喃的反应中可能具有关键的作用。

On the base of analyzing the influence factor, such as mechanical capability and stress status characteristic of rolling material, osculant areas, modified scheme of the calculation model is put forword and the modified model is established.

在分析机械性能、应力状态特性和接触面积等因素对轧制力的影响的基础上，对该计算模型提出了修改方案，建立了新的轧制力改进模型。

The oxidable potential difference of DA and AA was about 184 mV at Poly-Evans Blue modified electrode. So it is used to simultaneously determine the DA and AA without any interference. The interference of other components could be efficiently eliminated at the modified electrode, and this method can be used for determination of DA and AA in real sample with satisfactory results.

当DA与AA共存时，由该修饰电极检测的二者氧化峰电位差达184mV，故可同时测定DA和AA，并有效消除其它组分对DA测定的干扰，已用于实际样品中DA和AA含量的测定，结果令人满意。

In order to improve the electro-catalytic activity of platinum based catalyst to methanol oxidation, in this thesis, firstly prepare heteropoly acid modified Pt/GC electrode with different concentration by cyclic voltammetry method, and then test the cyclic voltammetry curves individually in vitriolic and methanol solution. The study shows the best concentration for both phosphomolybdic acid and phosphotungstic acid is 1×10~(-3)mol/L. And find the more heteropoly acid modified on electrode, the lower peak-up potential towards methanol because of the existence of oxygenous species.

为了改善铂基催化剂氧化甲醇的催化活性，本论文首先通过循环伏安扫描法制备了不同浓度磷钼酸和磷钨酸修饰的Pt/GC电极，通过研究Pt/GC电极在修饰前后在硫酸溶液中及含甲醇的硫酸溶液中的循环伏安行为发现，磷钼酸和磷钨酸均能在PtRu/C电极上发生氧化还原反应，而且杂多酸修饰浓度对Pt/GC电极氧化甲醇的催化活性有很大影响。

Monolayer.2. A Novel Sensor Based on Layer-by-Layer Hybridized Phosphomolybdate and Poly on a Cysteamine Modified Gold ElectrodeA novel sensor have been constructed by layer-by-layer hybridizing phosphomolybdate and poly on a cysteamine modified gold electrode.

磷钼杂多酸和聚二茂铁硅烷多层组装膜修饰电极及其电化学行为采用层层组装法在金电极上组装多金属氧酸盐阴离子和聚阳离子聚二茂铁硅烷，交替沉积多层膜，构建了杂多酸-PFS多层膜修饰的金电极。

In order to improve the electrocatalytic activity of the anode in the Direct Methanol Feul Cell, three kinds of transition metal substituted phosphomolybdic acid modified platinum electrodes were prepared, and the electrochemical behavior in the sulphuric acid solution of transition metal substituted phosphomolybdic acid modified platinum electrodes and their electrocatalytic effects of methanol oxidation were studyed. The anti-poison effect to carbon monoxide of the prepared electrodes were studied by the carbon monoxide adsorbing.

为了提高直接甲醇燃料电池阳极催化活性，本文研究了三种过渡金属取代磷钼酸修饰铂电极在硫酸溶液中的电化学行为及对甲醇的电催化氧化作用，并利用一氧化碳吸附实验评价了三种过渡金属取代磷钼酸修饰铂电极的抗一氧化碳毒化性能。

The results show that the three kinds of heteropolyacid modified platinum electrodes have the higher electrocatalytic activity to methanol oxidation, PMnMo11 modified platinum electrode has the highest electrocatalytic activity. Meanwhile the anti-poison effect to carbon monoxide of platinum electrode can been improved by modification of transition metal substituted phosphomolybdic acid.

结果表明，三种过渡金属取代磷钼酸修饰铂电极均能够提高铂电极的催化活性，其中PMnMo11修饰铂电极对甲醇的催化活性最高，同时铂电极经三种过渡金属取代磷钼酸修饰后抗一氧化碳毒化能力增强。

In this paper, the photocatalytic activity and its factors of effect of modified nano-TiO_2 by different modified methods.

本论文通过对二氧化钛不同方法的改性研究了改性二氧化钛的光催化活性及其影响因素。

A stable, water-insoluable film was prepared by oxidative electropolymerization of pyrogallol in pH7.0 phosphate buffer solution, anti modified on a glassy carbon electrode surface by electrochemical method. The modified electrode was exploited for the selective preconcentration of Cu at a certain potential. The preconcentrated Cu was firstly reduced at a certain potential and then was determined by differential pulse stripping voltammetry.

采用电化学方法在pH7.0磷酸缓冲溶液中，将邻苯三酚氧化电聚合制成稳定的水不溶性膜修饰在玻碳电极表面，将制得的膜修饰电极在一定电位下选择性预富集铜，并用差分脉冲溶出伏安法测定。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。